Struct TextPlaybackState 

pub struct TextPlaybackState { /* private fields */ }

Renderer-independent text lifecycle and playback. Retain it beside prepared glyph data and reconcile only after content, configuration, or layout changes. No allocations occur in sample; reconciliation allocates membership storage.

Implementations

impl TextPlaybackState

pub fn reconcile( &mut self, text: &str, layout: &[TextLayoutUnit], options: &TextOptions, now: Duration, reduced: bool, ) -> Vec<u64>

Reconciles a prepared destination and returns identities in layout order. Equal content can reclaim an outgoing unit before its exit completes.

pub fn sample( &mut self, now: Duration, reduced: bool, progress: Option<f64>, ) -> bool

Samples the presentation with an optional normalized finite entrance cursor. Scrubbing holds entrance playback; layout reflow still follows its own target. Panics for non-finite progress or values outside zero through one.

pub fn translate(&mut self, offset: [f64; 2])

Moves the coordinate reference without changing velocity or playback time. Useful when an unchanged text element follows its parent layout. Panics for non-finite offsets. Content-induced reflow should use reconcile instead.

pub fn presentation(&self) -> impl Iterator<Item = &TextPresentation>

Current prepared presentation, without allocation or advancing time.

pub fn text(&self) -> &str

Semantic destination; outgoing visual content is never included.

pub fn is_animating(&self) -> bool

Whether the previous sample requires another frame.

pub fn pause(&mut self, now: Duration)

Freezes the animation clock at its current presentation.

pub fn play(&mut self, now: Duration)

Resumes after a pause or scrub, retargeting from the held pose after a scrub.

pub fn seek(&mut self, progress: f64, now: Duration) -> bool

Holds a normalized entrance cursor. Infinite clips reject normalized seeking. Returns false for an infinite clip; otherwise panics for invalid progress.

pub fn restart(&mut self, now: Duration)

Replays the current incoming units, preserving their stable identities.

Trait Implementations

impl Default for TextPlaybackState

fn default() -> Self

Returns the “default value” for a type.